/**
* return foreign links
*
* @access public
* @return array
*/
function &links()
{
if (!self::$_links) {
self::$_links = array('item_id' => 'cividiscount_item:id', 'contact_id' => 'civicrm_contact:id', 'contribution_id' => 'civicrm_contribution:id');
}
return self::$_links;
}
